20810110820 has 24 divisors (see below), whose sum is σ = 43712742528. Its totient is φ = 8321852000.

The previous prime is 20810110759. The next prime is 20810110859. The reversal of 20810110820 is 2801101802.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58076 + ... + 212115.

It is an arithmetic number, because the mean of its divisors is an integer number (1821364272).

Almost surely, 2^20810110820 is an apocalyptic number.

20810110820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20810110820 is an abundant number, since it is smaller than the sum of its proper divisors (22902631708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20810110820 is a wasteful number, since it uses less digits than its factorization.

20810110820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274051 (or 274049 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The spelling of 20810110820 in words is "twenty billion, eight hundred ten million, one hundred ten thousand, eight hundred twenty".